Manganese ore for industrial use for the majority of compounds of manganese oxides and carbonates. Most manganese ore is composed of a variety of manganese minerals and contains a certain amount of iron . 1. Manganese Oxide Ore Dressing Technology Manganese oxide ore is dominated by secondary manganese oxide ore from weathered deposits, as well as primary and secondary manganese oxide ore from certain sedimentary and hydrothermal deposits. The manganese minerals in the ore are mainly hard manganese ore, pyrolusite and manganese ore; the gangue is mainly silicate minerals, but also carbonate minerals, often accompanied by iron, phosphorus , nickel , cobalt and other components. The ore dressing method of manganese oxide ore is mainly based on re-election. Weathered manganese oxide ore often contains a large amount of slime and fine ore, and the washing and re-election method is adopted in production. The ore is washed and removed to remove the slime, and the obtained net ore can be used as a finished ore, and some need to be selected by jigging and shaking. Washing overflows sometimes require further recovery by re-election or ferromagnetic methods. Some sedimentary primary manganese oxide ore, due to the depletion of mining, the use of heavy medium and jigging re-election to remove gangue, to obtain massive concentrate. In iron-bearing manganese oxide ore, the iron mineral is mainly limonite. Iron and manganese are difficult to separate by re-election, flotation or strong magnetic separation, and a reduction roasting magnetic separation method is required. A washing-reduction roasting magnetic separation-re-election process has been employed in the industry. Second, manganese carbonate ore dressing method Among the sedimentary manganese carbonate ore, the main manganese minerals are rhodochrosite, calcium rhodochrosite, manganese-containing calcite and rhodochrosite. The gangue has silicate and carbonate minerals, often accompanied by impurities such as sulfur and iron. The ore is generally more complicated. The size of the manganese mineral inlay is as small as a few microns, which is difficult to dissociate, and it is often difficult to obtain a higher concentrate taste. Manganese carbonate ore dressing production practice is less, and methods such as strong magnetic separation, heavy medium beneficiation and flotation are studied. Some sedimentary sulphur-containing manganese carbonate ore, the industry uses the sequential preferential flotation process of carbon shale , pyrite and manganese minerals. Some hydrothermal of lead, zinc carbonate, manganese ore, using the flotation - strong magnetic separation process. Some sulfur-rich manganese ore, manganese minerals are mainly sulphur-manganese ore, and can be removed by roasting. Some manganese carbonate ore production also uses a roasting method to remove volatile components to obtain a finished ore. Both manganese oxide and manganese carbonate ore contain some refractory ore. Manganese is closely symbiotic with iron, phosphorus or gangue. The size of the inlay is extremely fine and difficult to sort. It can be treated by smelting method. Api 602 Check Valve is samll forging shut off valve which widely used in all type system of thermal power plant. API 602 Check Valve with bolt bonnet or welding bonnet type as well as full port or reduce port. Valve size from 1/2"(PN15) to 2"(PN50) matching pressure class 150(PN16) to class 2500(PN420). Valve connection can be NPT, BW, SW, RF. API 602 Check Valve Api602 Check Valve,Forged Check Valve,High Pressure Check Valve,Api 602 Check Valve Yongjia South Trading Co.,Ltd , https://www.n-lvalve.com
Introduction of manganese oxide and manganese carbonate beneficiation methods